Spinning box for artificial silk



J. CLAYTON.

SPINNING BOX FOR ARTIFICIAL SILK. 7

APPLICATION FILED NOV: 11, 1920.

1,417,455. 4 I Patented May23',1922.-

2 SHEETS-SHEET I.

CLAYTON.

I SPINNING BOX FOR ARTIFICIAL SILK.

APPLICATION FILED NOV: II I920 1 417 455 I I I Patented May 23, 1922.

2 SHEETSSHEET 2.

. maaJ/ivm [III'IIIIIIII'IIIIIIII UNITED STATES PATENT? FFICE."- j

JAMES CLAYTON, or SEBAKWE, BABBAcoMBE, ENGLAND, assIeNoR 'ro THEvrscosn' COMPANY, OF MARCUS HOOK, PENNSYLVANIA, A CORPORATION OFPENNSYL- VANIA.

To all whom it may concern:

, Be it known that 1, JAMES CLAYTON, a subject of the King of GreatBritain and Ireland, and a resident of Sebakwe, Babbacombe, county ofDevon, England, have invented certain new and useful Improvements inSpinning Boxes for Artificial Silk,

' of which the following is a specification.

My invention relates to spinning boxes, and particularly to boxes forspinning arti-. ficlal silk. The object of my invention is to providea'practical and efiicient spinning box of metal, lined to preventdiscoloration of the silk by contact with the metal walls of the box.

In the accompanying drawings- Fig. 1 is a vertical section through a boxI in which my invention is embodied in one form;

Fig. 2 is a broken perspective of a box showing one manner of installingthe lining for the side wall; and

Fig. 3 is a vertical section through a box of modified construction.

In apparatus for spinnin artificial silk, the filaments of silk comingroin the setting bath are led into a box rotated at high speed, so thatthe filaments are twisted together into a thread which is thrown bycentrifugal force outward against the side walls of the box, and isthere built up into a so-called fiber cake.. The filaments carry withthem certain chemicals from the setting bath, and the presence of thesechemicals in contact metal has been found to result in dis-' colorationof the threads which lie in contact therewith. Inasmuch as thisdiscoloration persists after washing the threads, it has beenimpracticable to use a metal box by reason of the waste incidental tothis discoloration. The spinning box has therefore customarily been madeof rubber, which is causes no discoloration of the threads SPINNING BOXFOR ARTIFICIAL SILK.

prises a metallic shell or casing 5, preferably of some acid-resistingmaterial, such as monel metal, in sheet .form, which is stamped, spun ordrawn, or otherwise formed to truncated cone shape, open at the bottom,but closed at its narrower top by the end plate 6. apertured at 7 topermit theintroduction of a guide funnel (not shown), 'through which thefilaments are led into the box. The margins of the aperture'iarepreferably upturned to form a collar flange 8'. In operative positionthe casing is seated upon a base 9 (Fig. 3) of any suitable sort, and towhich rotary motion is imparted in anyconvenient manner. 1

The acid-proof lining of cellulold, cellulose acetate, ebonite, rubberor the like, comprises a top plate 10, which,.as' shown in Fig. 1,

Specification of Letters Patent. Patented May 23, 1922. Applicationfiled November 11, 1920. Serial No. 423,315. I i

The latter is centrally is molded to shape and has a central apertureand boss 11 lining the collar flange 8 of the metal shell 5. The outermargin of the lining plate 10 is shaped on its upper face to the contourof the box corner 13, while its lower face is peripherally offset toafford a shoulder 12 adapted to be engaged by the upper edge of the sidewall lining 14. The latter is ,formed from similar acid-resistingmaterial, and may be cut from a flat sheet in a form so generated thatwhen fitted within the conical side wall ofthe box the edges of thesheet meet in a straight line at 15. When so formed it may be readilyplaced in position by partially coiling the same, as in dicated in Fig.2. Upon its release the lining automatically expands against the innerface of the box body 5, and may then be forced upward and seated againstthe shoulder 12 of the top lining plate 10. The conical shape of the boxsides automatically forces toward each other the side edges of thelining sheet 14, so that they'meet at 15 whenthe sheet is forced home.In order to retain the side liningin position, I form a head 16 at thebottom of the box, the inner edge 17 of which is preferably beveled, andwhen rolled over into engagement with the lower edge of the lining 14,not only holds the latter up against the shoulder 12 of the top liningplate 10, but alsov presses the lining 14: out-- ward against the sidewall of the box. This construction has the further advantage of rotectinthe: lining against mechanical inury or replacement during theoperations ion of removal from, or replacement upon, the supporting base9.

. In Fig. 3 I have shown a slightly modified construction, in which thebox body 18 is of somewhat greater height in order to afford more roomabove the base 9 for the reception of the fiber cake. In thisconstruction the wall of the box is beaded at 19 at approximately thelevel of the top of the base 9, and both the lining 20 and the bead 19are perforated at 21 and 22 to permit the escape of the chemicalsfromthe box. In this construction the hole in' the top of the box isprovided with a bushing 23, such as referred to in my co-pendingapplication, Serial No. 320,019, filed August 26, 1919. This issupported on the inwardly projecting flange 24 of the ferrule 25, whichpasses .through the opening in the top of the box and is externallythreaded to receive the clamping nut 26. The inwardly projecting flange27 on the-latter overlies the top of the bushing 24, thus securelyholding the latter in place when the nut is screwed down upon thebushing 25. A shoulder 28 beneath the head of the nut affords means forlifting the box from the base 9 when it is desired to remove the spunfiber cake. An annular foot piece 29 on the bushing 25 engages thebeveled central opening 30 in the top lining plate 31, and serves tohold the latter firmly in position.

Various modifications of construction will readily occur tothose skilledin the art,

I stantially closed at one end, a lining plate for said'closed end, andan independent lining for the side wall of the box.

2. A spinning box for use in the manufacture of artificial silk,comprising a metallic box body of truncated cone shape,

substantially closed at one end, a lining plate for said closed end,andv an independent lining for: the side Wall of the .box, said end 3. Aspinning box *for use in the -manufacture of artificial silk, comprisinga sheet metal box body of truncated cone shape, substantially closed atits end of less diameter, in combination with a discoloration preventinglining for the end and side wall of said box.

4. A spinning box for use in the manufacture of artificial silk,comprising a sheet metal box body, a lining for the side wall thereof,and a bottom flange on said wall pressed against the edge of said liningto hold the same in position.

5.- A spinning box for use in the manufacture of artificial silk,comprising a sheet metal box body, a lining for the side Wall thereof,and a bottom flange on said wall pressed against the edge of said liningto hold the same in positlon, together with a lining plate for the topof the box engaged under pressure by said side lining.

6. A spinning box for use in the manufacture of artificial silk,comprising a metallic box body of truncated cone shape, and a sidelining there-for formed from flat material developed to fit the conicalbodyof the box.

7. In a spinning box for use in the manuing bush confined between saidnut and bushing, together with a top lining for said box, and a flangeon said bushing engaging said lining to'hold the same in place.

In testimony whereof I have signed my name to this specification.

JAMES CLAYTON.

